Generally not. While many authors write about magic in their stories, few of them actually believe it exists. When it comes to deciding how magic should work in a story it is pretty easy to just make something up.
Stephen King incorporates elements of magic and the supernatural in his writing, but in interviews he has talked about being more interested in exploring the human psyche and fears through his stories rather than having a personal belief in magic.
A movie does not reflect anything about what God does or does not think, as it is solely the creation of its writers, directors, and producers.
Christmas stories may feature magic, but those stories were created by people and so do not indicate anything about God's opinions.
fiction stories
Some religious individuals or groups may disapprove of ghost stories due to beliefs about spiritual influences and the supernatural. However, interpretations can vary, and not all religious people forbid reading or enjoying ghost stories like those by Charles Dickens. Ultimately, it depends on individual beliefs and personal convictions.
No.
It is a magic spirit as in Arabian stories.
"Magic", as it appears in fantasy stories such as Harry Potter for example, is basically fictional. Different authors may have different theories/stories as to where the magic comes from... though this is quite often not stated. You can make up your own theories or stories - after all, it's fictional.
She started writing the Magic Tree House series in 1982.
Since magic is fictional, its source can be whatever the author writing about it wants it to be.
magic
No, all stories relating to magic are make believe - fiction.